Nut-grinding device.



PATENTED AUG. 14, 1906.

J MILLER, Jn NUT GRINDING DEVICE. APPLICATION FILED JAN. 19, 1906.

- pointed out in the appended claims.

' flat side faces thereof fof a device adapted for holding nuts and VUNITED STATES PATENT OFFICE. JOHN MILLER, Jn., OF BELOIT, WISCONSIN, AssIGNOR To yBnsLv, or CHICAGO, ILLINOIS. i

NUT-@FUNDING DEVICE..

CHARLES H.

N o. 828,563.' Specification of Letters Patent. Patented Aug. 14, 1908.

Application led January 19, 1906. Serial No. 296,887. ai

I provided on their adjacent faces with oppositeparallel flat grinding-surfaces. In the machine illustrated the disk B. is movable toward and from the disk B. B2 designates a support for the holdin device, which is located between the two isks B B and which is attached to or supported upon a stationary part of the machine-frame. indicates a hand-lever which is To all whom it may con/cern- Be itknown that I, JOHN MILLER, Jr., a' citizen of the United States, and a resident of Beloit, in the county of Rock and State of Tisconsin, have invented certain new and useful Improvements in Nut-GrindingDevices and I do hereb declare that the follow-- ing is a full, clear, and7 exact description thereof, reference being had vto the accompanying drawings, and to the letters of reference this kind for shiftingr the movable grlndin markedn thereon, which form a part of this disk B Ytoward and om the grinding-disk specification. e and to which the hand of the operator is aphis invention relates to a device adapted' to hold a plurality of flat-sided symmetrical articles, such as nuts or bolt-heads, in position for grinding by the' use of a rotary rin der having a Hat grinding surface or surfaces.

My invenlion consists inthe matters hereinafter described, and more particularly purpose of pressing or forcing said disk B toward the disk B in theoperation of grinding opposite flat faces of an article placed between said grinding-disks. A2 A2 A2 indicate a plurality of stu s which are afHXed to the bar A and extend from one side of the same. Said studs are arranged in a straight line along the center of the bar A and are parallel with each other. Each of said studs A2 is exteriorly cylindric and is adapted to receive a plurality of nuts or like articles to be ground, such as is indicated by C C C in the drawings, the nuts being placed or strung upon the studs in superposed relation in the The bar l I is made nardevice embodying my invention consists in its main featuresof a supporting elo- Inent or bar narrower than the distance between the opposite,` side faces of the articles to be ground, having at one end a handle and provided with means for detachably holding or supporting a plurality of the articles in position side by si e along the same in such manner that the several articles niay be turned or rotated, so as to bring the different in position to be actedk upon by the grinder.

In the accompanying drawings, illustrating my invention, Figure 1 is a perspective view arts of a double rotary disk rinding-mac he, showing the manner in which the nuts are ground by the action of the adjacent lng-faces of the-two grin ding-disks. an elevation of the device for holding nuts shown in Fig. 1. Fig. 3 is -a cross-section taken on line 3 3 of Fig. 2. Fig. 4 is a crosssection taken upon line 4 4 of Fig. 2. Fig. 5 is a erspective view of a device adapted for ho ding bolts. Fig. 6 is a cross-section taken on line 6 6 of Fig. 5.

F gs. 1 to 4 of the drawings illustrate aV not interfered with by the presence of said The studs A2 A2 being cylindric and the nuts strung upon the same in the manner described, sald nuts may be easily turned on the studs to bring their several faces toward the sides of the bar, as required for grinding t e several opposite fiat faces in succession. The device shown in said Figs. 1 to 4 includes means for-yieldingly holding the nuts from turning on the several studsin such manner that/the nuts may bereadily turned by the fin ers of the operator to bring the different or at faces thereof in position for the action of the grinding-disks thereon. The devices for this purpose (shown in the said Figs. l to 4 of the drawin s) are made as follows: A3

holdin device adapted for grinding nuts. indicates a hol ingbar arranged parallel In sait? figures, Aindicates the main supportwith the bar A and exterior kto the free ends in element or bar of the holding device proof the studs A2. Said holding-bar is connectvided at one end with a handle A. In Fig. 1, ed with said bar A by means of two posts al c, B B indicate the two 'nding-disks of a rorigidly attached to said bar A. The holdingtary disk grinding-magie bar A3 is pivoted to the post a by means of a.

e, said disks being'- IOO \ the post a',

` ihc nuts` upon transverse pivot-pin ar', so arranged that the opposite end of said bar A3, which is preferably that nearest the handle A', may swung toward an from the said bar A. The swinging end of said bar A3 is detachably secured to the post a by a locking device. Such locking device consists, as shown in the drawings, of a head a3 on provided with an outwardl ropening notch to receive theA holding-bar, as clearly seen in Fig. 4, and a spring-late a", secured to the post and adapted to engage the outer surface of the bar 1n such manner as to hold it within the notch. ln the particular construction illustrated the springla'fch a4 has a flat spring a?, attached at its lower end to the post and extending at one a3, an a detent portion which engages the outer edge of the bar and is )rovided with a finger-piece a3, by which the latch may be swung out of engagement with the holding-bar when desired. The -said liolding-bar A3 carries a series of pressure members A* A4, arranged'severally opposite the free ends of the studs AZ A2 A2 and adapted to act on the outermost of the nuts on said studs to hold the several nuts in place on the studs. Said pressure devices A* are made of yielding or resilient character, so will exert yieldin pressure on the nuts, an thus hold them om too freely turning on the studs. ln the preferred embodiment o my invention illustrated each pressure member A* consists of a spirallv-coiled spring, which is attached to the bar A3 b means of a circular metal disk al, to which t e outer coil of the spring is attached by means of holdingclips a3 a3 a3 on said disk, the disk being secured to the inner face of said holding-bar A3. Said coiled springs, constituting the holding or retaining members A4, are shown in the drawings as made large enough in diameter to pass over the outer ends of the studs A2, so that they will press against the outermost nuts placed on said studs in the manner illustrated in the drawings. Preferably the outer or free ends of the studs A3 are ma e rounde or tapering, both to facilitate the application of the nuts to the studs and to guide the ends of the springs A4 into contact with the nuts when the holding-bar A3 is laced in its holding position. The studs are prefers. ly made hollow or tubular, as shown, in order to avoid undue weight in the device.

ln placing the nuts on the nut-holding device described the holding-bar will be first opened or thrown back, the nuts placed on ihc several studs, and the holding-har then ihron'n inward and locked, so as to confine the studs.

ill snc llal laces thereof in position parallc ihc sides of the bar A. ln the grinding operai ion thc holding i'lcvice,with the nuts thcrconwill be placed between l nuts turned to bring l position for grinding.

that they The several nuts ilicn he turned so as to bring two oppo- 1 with the grinding-disks B B', with the port B2 andthe bar A resting upon the suphandle B3 then manipulate be "to bring the movable disk B toward the disk disks against the B, thereby pressing both o posite side faces of the nuts and grinding all of them simultaneously. After two faces have been ground on each nut in this manner the holder, with the nuts thereon, wi e drawn out from between the disks an This operation will be repeated until all of the flat faces on the several nuts have been groun ln Figs. 5 and 6 is shown a simple form of holder that maybe used in grinding the fiat faces on the heads of articles, such as bolts having cylindric headed stems. ln this instance the device consists of a straight bar l), rovided with a handle D and with a plurality of cylindric apertures d, arranged along the center line of the bar. E indicates the bolts to be ground, the cylindric shanks o which are inserted in the holes d and the heads of which rest upon the top of the bar D, the bolts being adapted to be rotated in -the holes to bring their ditfcrent flat faces in osition for grinding. t will of course be understood that in the grinding operation the holding device will be so place between the grinding-disks that the grinding-surfaces thereof will move in a direction to press or carry the articles toward the supporting-bar of the device, so that the action of the disks on the articles will have no tendency to dislodge the articles from the holding devices .on said bar.

While I have described the use of my holdino* device in connection with. a double-disk grinder, yet the said holding `device may be used in connection with a single-disk grinder or a single-cup grindin -wheel oran emeryring grinding-machine by pressing the nuts against the grinding-face o the er one side at a time.

l claim as my invention 1. A holding device for the rpose set forth., embracing a supporting-bar narrower than the distance apart of the opposite flat sides of the articles to be ground, and said bar being provided with means affording detachable andl rotative connection of said articles therewith.

2. A holding device for the purpose set forth, embracing a supporting-bar narrower l than the distance apart of the flat sides of the article to he ground, said bar being prol vided with incans for supporting a plurality i of article side by side along thc saine, adaptcd to permit rotation of the said articles.

3. A holding device for the purpose set forth, embracing a supporting-bar narrower than the distance apart of the opposite flat sides ol' lthe articles to lbe ground. said bar hcing provided -with means affording detachable and rotative connection of the articles IOO therewith, and with means affording yielding prressure on said articles to hold them from eely turning.

4. A holding device for the purpose set forth, embracing aV supporting-bar narrower than the .distance apart of the opposite iiat sides of the articles to be ground, said bar being provided with means affording detachable and rotative connection of the articles therewith, said supporting-bar being provided a one end with a handle.

5. A holding device for the purpose set forth, embracing a su porting-bar provided with a lurality of cylindric studs arranged longitu 'nally thereof at one side of the bar and parallel with each other; said bar being narrower than the distance apart of the opposite fiat faces of the articles to be ground.

6. A holding device for the purpose statedl comprising a supporting-bar'provided with a plurality of studs arranged longitudinally of the bar at one side thereof and4 )arallel with each other, and means for hol ing nuts or the like on said studs, adapted to act with yielding pressure on said nuts.

7. A device for the purpose set forth'7 embracing a supporting-bar provided with a plurality of parallel studs arranged along the ar and extending from one side of the same, a holding-bar movably connected with the supporting-bar and arranged opposite the free ends of the studs, and pressing members attached to the holding-bar and)y adapted to act upon nuts or the like placed upon the studs.

8. A device for the purpose set forth, comprising a sup orting-bar provided witha. lu rality of para lel studs arranged alongxthe arv bers attached to the to act upon nuts or the like applied to said and extending from one side thereof, a holding-bar movably connected with the supporting-bar and spring pressing members connected with ,the holding-bar anddapted to act upon the nuts or the like p said studs.

9. A device for the purpose set forth, comprising a supporting-bar provided with a lurality of parallel studs arranged along the iiar and extending from one side thereof, and with two posts, a holding-bar pivoted to one of said posts and having detachable connection with the other post, and pressing members attached to the holding-bar and adapted to act upon nuts or the like applied to said posts.

10. A device for the purpose set forth, comprising a sup orting-bar provided with a plurality of paral el studs arranged along the ar and extending from one side thereof, and with two posts, a holding-bar pivoted to one of said posts and having detachable connection with the other ost, and pressing memolding-bar and adapted posts, said pressing members consisting of spirally-coiled springs attached to the holding-bar and adapted to receive the adjacent ends of the studs.

In testimony that I claim the foregoing as my invention I affix my signature, in resence of two witnesses, this 13th day of 'llanuary, A. D. 1906.

JOHN MILLER, JR.

ced upon n 

